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I knew about the last one, and it was unplayable on my mid'09 13" MBP and its 9400m. I don't know if it's a few Chrome updates or the bump to Mountain Lion but it's smooth as butter now (performance of [0] improved a lot too, it was John Woo slo-mo, now it's realtime — although dragging the ball is a bit jerky).

[0] http://madebyevan.com/webgl-water/

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Wow, color me incredibly impressed.

I'll second that. I don't think I've ever interacted with such a complete real-time light simulation, webGL or otherwise: It's simulating refraction of objects seen through the surface of the water (something I've wished game engines would do ever since I first dove into a flooded cavern in the original Tomb Raider), it's simulating diffraction of light through the waves onto the surfaces below, and it's simulating radiosity diffusion between adjacent surfaces (move the ball toward a wall and watch as not only its shadow grows but its own surface facing that shadow darkens as less light is reflected back).

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